Oil-cupola.



Fl El OIL CUPOLA.

APPLICATION FILED SEPT.20. ISIS.

39%?, 1%, Patented Feb, 19, 1918.

FRANCIS E. DORF, OF STOCKTON, CALIFORNIA.

OIL-CUPOIA.

Specification of Letters Patent.

Patented Feb.. I9, gide To all 'whom t may concern.'

Be it known that I, FnANCis E. Donn, a citizen of the United States, residing at Stockton, in the county of San Joaquin, State of California, have invented certain new and useful Improvements in Oil-Cupolas; and I do declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, and to the characters of reference marked thereon, which form a part of this application.

This invention relates to a cupola used for the production of metal ores, the object of the invention being to produce one which will alloriT of the use of oil as a fuel thereof. Up to the present time I am not aware that there has been any successful oil cupola, and, since the cost of oil as fuel is many times less than other kinds of fuel and the use of the same is much more convenient and cleanly, I believe that my invention will have a great many advantages over the form of cupola now commonly in use.

A further object of the invention is to produce a simple and inexpensive device and yet one which will be exceedingly effective for the purposes for which it is designed.

These objects I accomplish by means of such structure and relative arrangement of parts as will fully appear by a perusal of the following specification and claim.

The gure of the drawings is a vertical section through the cupola.

Referring now more particularly to the characters of reference on the drawing, the numeral l designates the stack of the cupola which terminates at its lower end in a shelf 2. The numeral 3 designates the primary fire chamber which opens into the stack l at substantially right angles thereto. The receiving pot 4 extends downwardly from the fire chamber 3 at substantially right angles thereto and one of its sides, as at 5, curves into juncture with the shelf 2. The numeral 6 designates the spout leading from the p In the end of the re box 3 is an opening 7 arranged to receive the discharge from the primary oil burner 8. The similar opening 9 communicates with the pot 4: to allow of a i discharge therethrough from the secondary oil burner l0. l

The material to be treated in the cupola is introduced through the charging door 11 and drops down upon the shelf 2. The flame from the oil burner 9, discharging through the opening 7 and primary fire box 3, strikes the material and melts it. In its melted condition it flows down the curving side 5 into the pot 4t. I-Iere, if it is sulficiently melted, it passes out through the spout 6. If not sufliciently melted, it is again subjected to the secondary flame from the burner l0 so that it can be properly heated to cause it to melt and flow freely through the spout 6.

From the foregoing` description it will readily appear that I have a simple and convenient structure for a cupola by means of whichoil can be used as a fuel and one which should be found very easy and convenient to operate.

Also from the foregoing description it will be readily seen that I have produced such a device as substantially fulfils the object of the invention as set forth herein.

TWhile this specification sets forth in detail the present and preferred construction of the device, still in practice such deviations from such detail may be resorted to as do not form a departure from the spirit of the invention as dened by the appended claim.

Having thus described myinvention what I claim as new and useful and desire to secure by Letters Patent is:

A cupola comprising a stack terminating in a shelf at its lower end, a fire chamber extending at right angles to and communicating with the stack, a pot disposed below the level of the shelf and having one side extending into juncture with the shelf, a liquid fuel burner disposed at the end of the lire chamber opposite the shelf whereby the flame from such burner will discharge across the top of the shelf and into the stack, and another burner arranged to discharge into the pot.

In testimony whereof I aix my signature.

FRANCIS E. DORF.

copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

